[{"data":1,"prerenderedAt":66},["ShallowReactive",2],{"q-nurse-111-2-basic-medicine-016":3},{"subject":4,"subjectSlug":5,"subjectFullName":6,"question":7,"related":35,"lastmod":65},"基礎醫學","basic-medicine","基礎醫學(包括解剖學、生理學、病理學、藥理學、微生物學與免疫學)",{"id":8,"webId":9,"year":10,"session":11,"subject":4,"number":12,"stem":13,"options":14,"answer":19,"answerNote":20,"images":21,"explanation":22,"explanationDeep":23,"topics":24,"freq":27},"nurse-111-2-基礎醫學-016","nurse-111-2-basic-medicine-016",111,2,16,"河豚毒素（tetrodotoxin）對神經細胞最主要的影響為何？",{"A":15,"B":16,"C":17,"D":18},"阻止神經細胞再極化（repolarization）","阻止神經細胞去極化（depolarization）","促進神經傳導物質的釋放","抑制神經傳導物質的釋放","B",null,[],"本題考點為河豚毒素（tetrodotoxin, TTX）對神經細胞的作用機轉。依神經生理，TTX 專一阻斷電位敏感型鈉離子通道，使鈉無法內流、動作電位無法產生，即阻止去極化，故選 B。A 錯在再極化主要靠鉀外流，非 TTX 主要標的；C、D 錯在 TTX 並非直接作用於神經傳導物質的釋放機制，而是阻斷鈉通道，使神經與肌肉無法興奮，導致麻痺與呼吸衰竭，故選 B。","動作電位上升相由電位敏感鈉通道開啟、鈉內流造成去極化；TTX 與 saxitoxin 皆選擇性堵住此通道孔道，阻斷去極化，是研究鈉通道的經典工具藥。臨床上河豚中毒表現為口周麻木、四肢無力至呼吸肌麻痺，因感覺與運動神經傳導受阻。對比：局部麻醉劑亦作用於鈉通道，可一併記憶。",[25,28,30,32],{"term":26,"count":27},"動作電位",4,{"term":29,"count":11},"河豚毒素",{"term":31,"count":11},"去極化",{"term":33,"count":34},"電位敏感鈉通道",1,[36,40,45,50,55,60],{"webId":37,"stem":38,"number":39,"year":10,"session":11},"nurse-111-2-basic-medicine-017","有關突觸後電位（postsynaptic potentials）的敘述，下列何者正確？",17,{"webId":41,"stem":42,"number":43,"year":44,"session":11},"nurse-112-2-basic-medicine-013","下列何者腦區受損與順向失憶症（Anterograde Amnesia）最為相關？",13,112,{"webId":46,"stem":47,"number":48,"year":49,"session":34},"nurse-113-1-basic-medicine-007","下列何者最可能同時降低動脈血壓波振幅（arterial pulse wave）與動脈血壓波速度（pulse wave velocity）？",7,113,{"webId":51,"stem":52,"number":53,"year":54,"session":11},"nurse-114-2-basic-medicine-005","巨噬細胞是由下列何者分化而成？",5,114,{"webId":56,"stem":57,"number":58,"year":59,"session":34},"nurse-106-1-basic-medicine-009","下列何者位於環狀軟骨上方，能調節聲帶之緊張度？",9,106,{"webId":61,"stem":62,"number":63,"year":64,"session":34},"nurse-107-1-basic-medicine-043","一個剛出生的嬰兒，口中有大量口水流出且無法餵食，是因下列何者先天性異常？",43,107,"2026-09-04",1788510737123]